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           Supplemental Disclosures of Cash Flow Information and Noncash Investing and Financing Activities - Additional Information (Detail) (USD $) 
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        12 Months Ended | 0 Months Ended | ||
|---|---|---|---|---|
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           Jun. 30, 2014 
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           Jun. 30, 2013 
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           Jun. 30, 2012 
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           Apr. 30, 2014
 
          PrimeGene 
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      |
| Other Significant Noncash Transactions [Line Items] | ||||
| Acquisition consideration | $ 18,761,000 | |||
| Cash paid, net of cash acquired | 109,180,000 | 0 | 0 | 6,031,000 | 
| Acquisition consideration, payable | 12,730,000 | |||
| Cash paid for income taxes | 55,200,000 | 51,600,000 | 58,700,000 | |
| Stock options shares of common stock exercised | 1,077 | |||
| Shares of common stock surrender as a result of option exercise | 733 | |||
| Fair market value of common stock surrender as a result of option exercise | $ 56,000 | |||
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- Definition 
          Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          The value of the stock converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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- Definition 
          The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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